Appendix A: Functions and Instructions 527
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 527 of 132
expression - matrix1 ⇒ matrix
matrix1 - expression ⇒ matrix
expression
ì
matrix1 returns a matrix of
expression times the identity matrix minus
matrix1. matrix1 must be square.
matrix1 ìexpression returns a matrix of
expression times the identity matrix
subtracted from matrix1. matrix1 must be
square.
Note: Use .. (dot minus) to subtract an
expression from each element.
20ì[1,2;3,4] ¸
[19 ë2
ë3 16]
ù(multiply) pkey
expression1 ùexpression2 ⇒ expression
Returns the product of expression1 and
expression2.
2ù3.45 ¸6.9
xùyùx ¸x2øy
list1ùlist2 ⇒ list
Returns a list containing the products of the
corresponding elements in list1 and list2.
Dimensions of the lists must be equal.
{1.0,2,3}ù{4,5,6} ¸{4. 10 18}
{2àa,3à2}ù{añ,bà3} ¸{2øa b
2}
matrix1 ùmatrix2 ⇒ matrix
Returns the matrix product of matrix1 and
matrix2.
The number of rows in matrix1 must equal
the number of columns in matrix2.
[1,2,3;4,5,6]ù[a,d;b,e;c,f]
¸
expression ùlist1 ⇒ list
list1 ùexpression ⇒ list
Returns a list containing the products of
expression and each element in list1.
pù{4,5,6} ¸{4øp 5øp 6øp}
expression ùmatrix1 ⇒ matrix
matrix1 ùexpression ⇒ matrix
Returns a matrix containing the products of
expression and each element in matrix1.
Note: Use .ù(dot multiply) to multiply an
expression by each element.
[1,2;3,4]ù.01 ¸[.01 .02
.03 .04]
lùidentity(3) ¸
l 0 0
0 l 0
0 0 l
à (divide) ekey
expression1 à expression2 ⇒ expression
Returns the quotient of expression1 divided by
expression2.
2/3.45 ¸.57971
x^3/x ¸x2
list1 à list2 ⇒ list
Returns a list containing the quotients of list1
divided by list2.
Dimensions of the lists must be equal.
{1.0,2,3}/{4,5,6} ¸
{.25 2/5 1/2}